I've had something similar happen to me.

Last year, I was removing some old trees on our plateau. I was tired. Exhausted even. I had been clearing trees and verge for 12 hours. I was nearing completion. I was walking down a steep hill briskly, my hands over loaded with branches and logs. It was mostly dark by then. Well past twilight. I did not see the trees top laying on the ground as I walked past it. I only realized it was still there as I walked directly into it.

I remember the confusion as I stepped backwards, but the stick did not want to let go, and I heard the branches rattle. I knew right away it was going to be bad, and it was. It's topmost tip entered my left eye socket. The tip of the branch started at about 1/4" [6.3mm] diameter. It went between my eyeball and my top eyelid near the corner with my nose and penetrated to about 1" [25.4mm].

I couldn't keep it open for a few days from light sensitivity, and the scratched tissues left me constantly weepy. I had to wear sunglasses 24/7 for a few days. It turned all purple and looked kinda nasty.

But then, I healed up and my vision returned. And then it kept returning. The kicker was that my left eye, which had been a bit blurry for many decades, has now returned to nearly perfect. It's better than my right eye for sure, which has never been the case as long as I can remember.

So, in keeping with the trend of unexpected cures, I can attest that if you want to make your vision better, give yourself some good old fashioned eye trauma by walking headlong into a sharp pointy stick.

Or don't. Maybe don't. For gods sake, please don't.

True story though.